package com.sjgtw.cloud.system.service.impl;

import com.sjgtw.cloud.common.core.constant.UserConstants;
import com.sjgtw.cloud.common.core.exception.CustomException;
import com.sjgtw.cloud.common.core.utils.SpringUtils;
import com.sjgtw.cloud.common.core.utils.StringUtils;
import com.sjgtw.cloud.common.datascope.annotation.DataScope;
import com.sjgtw.cloud.system.api.domain.SysDept;
import com.sjgtw.cloud.system.api.domain.SysRole;
import com.sjgtw.cloud.system.domain.vo.TreeSelect;
import com.sjgtw.cloud.system.mapper.SysDeptMapper;
import com.sjgtw.cloud.system.mapper.SysRoleMapper;
import com.sjgtw.cloud.system.service.ISysDeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.stream.Collectors;

/**
 * <p>Title:部门管理--服务层--接口实现</p>
 * <p>Description: </p>
 * @author Admin
 * @date 2020-7-7
 */
@Service
public class SysDeptServiceImpl implements ISysDeptService
{
	@Autowired
	private SysDeptMapper deptMapper;

	@Autowired
	private SysRoleMapper roleMapper;

	/**
	 * 查询部门管理数据
	 * 
	 * @param dept 部门信息
	 * @return 部门信息集合
	 */
	@Override
	@DataScope(deptAlias = "d")
	public List<SysDept> selectDeptList(SysDept dept) {
		return deptMapper.selectDeptList(dept);
	}

	@Override
	public List<SysDept> selectDeptListAll(SysDept dept) {
		return deptMapper.selectDeptListAll(dept);
	}
	
	
	/**
     * 查询部门树结构信息 
     * 
     * @param dept 部门信息
     * @return 部门树信息集合
     */
	@Override
    public List<TreeSelect> selectDeptTreeList(SysDept dept) {
		List<SysDept> depts = SpringUtils.getAopProxy(this).selectDeptList(dept);
        return buildDeptTreeSelect(depts);
	}



	/**
	 * 功能描述: 获取总公司下属部门--不分页<br>
	 * @Param: []
	 * @Return: java.util.List<com.sjgtw.cloud.system.api.domain.SysDept>
	 * @Date: 2021.10.27 16:15
	 **/
	@Override
	public List<SysDept> acquireDepartmentsUnderTheHeadOffice() {
		SysDept dept = new SysDept();
		dept.setDeptType("0");
		List<SysDept> deptList = deptMapper.selectDeptListAll(dept);
		List<Long> deptids = deptList.stream().filter(x -> !x.getDeptId().equals(100L)).map(SysDept::getDeptId).collect(Collectors.toList());
		return deptMapper.acquireDepartmentsUnderTheHeadOffice(deptids);
	}

	@Override
	public List<SysDept> selectByNames(String deptNames) {
		if (StringUtils.isEmpty(deptNames)) {
			return new ArrayList<>();
		}
		String[] longArray = Arrays.stream(deptNames.split(","))
				.toArray(String[]::new);
		return deptMapper.selectByNames(longArray);
	}

	/**
	 * 构建前端所需要树结构
	 * 
	 * @param depts 部门列表
	 * @return 树结构列表
	 */
	@Override
	public List<SysDept> buildDeptTree(List<SysDept> depts) {
		List<SysDept> returnList = new ArrayList<SysDept>();
		List<Long> tempList = new ArrayList<Long>();
		for (SysDept dept : depts) {
			tempList.add(dept.getDeptId());
		}
		for (Iterator<SysDept> iterator = depts.iterator(); iterator.hasNext();) {
			SysDept dept = (SysDept) iterator.next();
			// 如果是顶级节点, 遍历该父节点的所有子节点
			if (!tempList.contains(dept.getParentId())) {
				recursionFn(depts, dept);
				returnList.add(dept);
			}
		}
		if (returnList.isEmpty()) {
			returnList = depts;
		}
		return returnList;
	}
	
	/**
	 * 根据ID查询所有子部门
	 * 
	 * @param deptId 部门ID
	 * @return 部门列表
	 */
	public List<SysDept> selectChildrenDeptById(Long deptId)
	{
		List<SysDept> children = deptMapper.selectChildrenDeptById(deptId);
		return children;
	}
	
	/**
	 * 根据ID查询所有子部门 --shenhua合同
	 * 
	 * @param deptId 部门ID
	 * @return 部门列表
	 */
	public List<SysDept> selectChildrenDeptshhtById(Long deptId)
	{
		List<SysDept> sysDeptLs = deptMapper.selectChildrenDeptshhtById(deptId);
		return sysDeptLs;
	}

	/**
	 * 构建前端所需要下拉树结构
	 * 
	 * @param depts 部门列表
	 * @return 下拉树结构列表
	 */
	@Override
	public List<TreeSelect> buildDeptTreeSelect(List<SysDept> depts) {
		List<SysDept> deptTrees = buildDeptTree(depts);
		return deptTrees.stream().map(TreeSelect::new).collect(Collectors.toList());
	}

	/**
	 * 根据角色ID查询部门树信息
	 * 
	 * @param roleId 角色ID
	 * @return 选中部门列表
	 */
	@Override
	public List<Integer> selectDeptListByRoleId(Long roleId) {
		SysRole role = roleMapper.selectRoleById(roleId);
		return deptMapper.selectDeptListByRoleId(roleId, role.isDeptCheckStrictly());
	}

	/**
	 * 根据部门ID查询信息
	 * 
	 * @param deptId 部门ID
	 * @return 部门信息
	 */
	@Override
	public SysDept selectDeptById(Long deptId) {
		return deptMapper.selectDeptById(deptId);
	}
	
	/**
	 * 根据DeptNum查询信息
	 * 
	 * @param deptNum
	 * @return 部门信息
	 */
	@Override
	public SysDept selectDeptByDeptNum(String deptNum)
	{
		return deptMapper.selectDeptByDeptNum(deptNum);
	}

	/**
	 * 根据ID查询所有子部门（正常状态）
	 * 
	 * @param deptId 部门ID
	 * @return 子部门数
	 */
	@Override
	public int selectNormalChildrenDeptById(Long deptId) {
		return deptMapper.selectNormalChildrenDeptById(deptId);
	}
	@Override
	public List<SysDept> selectNormalChildrenDeptListById(Long deptId) {
		return deptMapper.selectNormalChildrenDeptListById(deptId);
	}

	/**
	 * 是否存在子节点
	 * 
	 * @param deptId 部门ID
	 * @return 结果
	 */
	@Override
	public boolean hasChildByDeptId(Long deptId) {
		int result = deptMapper.hasChildByDeptId(deptId);
		return result > 0 ? true : false;
	}

	/**
	 * 查询部门是否存在用户
	 * 
	 * @param deptId 部门ID
	 * @return 结果 true 存在 false 不存在
	 */
	@Override
	public boolean checkDeptExistUser(Long deptId) {
		int result = deptMapper.checkDeptExistUser(deptId);
		return result > 0 ? true : false;
	}

	/**
	 * 校验部门名称是否唯一
	 * 
	 * @param dept 部门信息
	 * @return 结果
	 */
	@Override
	public String checkDeptNameUnique(SysDept dept) {
		Long deptId = StringUtils.isNull(dept.getDeptId()) ? -1L : dept.getDeptId();
		SysDept info = deptMapper.checkDeptNameUnique(dept.getDeptName(), dept.getParentId());
		if (StringUtils.isNotNull(info) && info.getDeptId().longValue() != deptId.longValue()) {
			return UserConstants.NOT_UNIQUE;
		}
		return UserConstants.UNIQUE;
	}

	/**
	 * 新增保存部门信息
	 * 
	 * @param dept 部门信息
	 * @return 结果
	 */
	@Override
	public int insertDept(SysDept dept) {
		SysDept info = deptMapper.selectDeptById(dept.getParentId());
		// 如果父节点不为正常状态,则不允许新增子节点
		if (!UserConstants.DEPT_NORMAL.equals(info.getStatus())) {
			throw new CustomException("部门停用，不允许新增");
		}
		dept.setAncestors(info.getAncestors() + "," + dept.getParentId());
		return deptMapper.insertDept(dept);
	}

	/**
	 * 修改保存部门信息
	 * 
	 * @param dept 部门信息
	 * @return 结果
	 */
	@Override
	public int updateDept(SysDept dept) {
		SysDept newParentDept = deptMapper.selectDeptById(dept.getParentId());
		SysDept oldDept = deptMapper.selectDeptById(dept.getDeptId());
		if (StringUtils.isNotNull(newParentDept) && StringUtils.isNotNull(oldDept)) {
			String newAncestors = newParentDept.getAncestors() + "," + newParentDept.getDeptId();
			String oldAncestors = oldDept.getAncestors();
			dept.setAncestors(newAncestors);
			updateDeptChildren(dept.getDeptId(), newAncestors, oldAncestors);
		}
		int result = deptMapper.updateDept(dept);
		if (UserConstants.DEPT_NORMAL.equals(dept.getStatus())) {
			// 如果该部门是启用状态，则启用该部门的所有上级部门
			updateParentDeptStatus(dept);
		}
		return result;
	}

	/**
	 * 修改该部门的父级部门状态
	 * 
	 * @param dept 当前部门
	 */
	private void updateParentDeptStatus(SysDept dept) {
		String updateBy = dept.getUpdateBy();
		dept = deptMapper.selectDeptById(dept.getDeptId());
		dept.setUpdateBy(updateBy);
		deptMapper.updateDeptStatus(dept);
	}

	/**
	 * 修改子元素关系
	 * 
	 * @param deptId       被修改的部门ID
	 * @param newAncestors 新的父ID集合
	 * @param oldAncestors 旧的父ID集合
	 */
	public void updateDeptChildren(Long deptId, String newAncestors, String oldAncestors) {
		List<SysDept> children = selectChildrenDeptById(deptId);
		for (SysDept child : children) {
			child.setAncestors(child.getAncestors().replace(oldAncestors, newAncestors));
		}
		if (children.size() > 0) {
			deptMapper.updateDeptChildren(children);
		}
	}

	/**
	 * 删除部门管理信息
	 * 
	 * @param deptId 部门ID
	 * @return 结果
	 */
	@Override
	public int deleteDeptById(Long deptId) {
		return deptMapper.deleteDeptById(deptId);
	}

	/**
	 * 递归列表
	 */
	private void recursionFn(List<SysDept> list, SysDept t) {
		// 得到子节点列表
		List<SysDept> childList = getChildList(list, t);
		t.setChildren(childList);
		for (SysDept tChild : childList) {
			if (hasChild(list, tChild)) {
				recursionFn(list, tChild);
			}
		}
	}

	/**
	 * 得到子节点列表
	 */
	private List<SysDept> getChildList(List<SysDept> list, SysDept t) {
		List<SysDept> tlist = new ArrayList<SysDept>();
		Iterator<SysDept> it = list.iterator();
		while (it.hasNext()) {
			SysDept n = (SysDept) it.next();
			if (StringUtils.isNotNull(n.getParentId()) && n.getParentId().longValue() == t.getDeptId().longValue()) {
				tlist.add(n);
			}
		}
		return tlist;
	}

	/**
	 * 判断是否有子节点
	 */
	private boolean hasChild(List<SysDept> list, SysDept t) {
		return getChildList(list, t).size() > 0 ? true : false;
	}
	
	/**
	* <p>Title: 返回离部门ID上级最近的某个部门类型的部门对象</p>
	* <p>Description: </p>
	* @return
	*/
	public SysDept findfuDeptByIdType(SysDept dept)
	{
		return deptMapper.findfuDeptByIdType(dept);
	}
}
